Floating-caliper disk brake

ABSTRACT

The invention relates to a floating-caliper disc brake of a motor vehicle including a brake holder firmly attached to the vehicle and a floating caliper that is mounted on the brake holder so as to be axially displaceable. In this arrangement, the floating caliper is displaceably mounted on the brake holder, preferably by means of at least one pin guide. A radial fixation of the floating caliper on the brake holder is carried out by a locking element that is detachably secured to the floating caliper and with a portion is axially displaceably arranged on the brake holder. To improve ease of displacement of the floating caliper and to prevent undesirable radial movements of the floating caliper, the locking element is secured to the floating caliper so as to be adjustable in its radial position. As a result, it is possible to adjust a defined radial clearance between the floating caliper and the brake holder.

TECHNICAL FIELD

The present invention relates to a floating-caliper disc brake of amotor vehicle including a brake holder firmly attached to the vehicleand a floating caliper that is mounted on the brake holder such as to beaxially displaceable. In this arrangement, the floating caliper isdisplaceably mounted on the brake holder frequently by means of at leastone pin guide.

BACKGROUND OF THE INVENTION

Thus, DE 40 24 484 C2 discloses a floating-caliper disc brake of thistype including a brake holder and a floating caliper wherein thefloating caliper is axially displaceably mounted on the brake holder bymeans of pin guides. Further, the associated brake pads are axiallydisplaceably guided on the brake holder and supported in acircumferential direction. The displaceable floating caliper iselastically clamped in relation to the brake holder in a radialdirection with respect to the brake disc axis by means of a housingholding spring. To this end, the housing holding spring is detachablyattached to the floating caliper, on the one hand, while it abuts underradial preload and axially displaceably on the brake holder, on theother hand. The housing holding spring prevents radial lifting of thefloating caliper and undesirable rattling noises developing duringbraking operations. However, this necessitates very great tension forcesof the housing holding spring, above all in floating calipers with ahigh weight, what unfavorably causes a high amount of displacementforces of the floating caliper in relation to the brake holder. Inaddition, the housing holding spring is subjected to very greatmanufacturing tolerances because the manufacturing tolerances of severalindividual components of the floating-caliper disc brake must be takeninto consideration when rating the spring. Thus, the manufacturingtolerances will render the exact spring rating very difficult so thatgreat variations of the spring tension force will frequently occur inpractical operations.

DE 100 33 834 A1 describes another variant of a spot-type disc brakewith a brake holder fixed to the vehicle and a floating caliper that isdisplaceably mounted on the brake holder by means of pin guides. Theassociated brake pads are guided in the brake holder so as to be axiallydisplaceable and supported in a circumferential direction. At least onebrake pad with lateral projections is arranged in a form fit in thebrake holder in such a way that it is fixed in a radial direction withinthe brake holder. The floating caliper in turn is radially connected byway of a pin to the brake pad fixed at the brake holder, with the resultthat also the floating caliper is locked in a radial direction at thebrake holder by way of the brake pad. Thus, radial lifting of the brakepad and of the floating caliper relative to the brake holder isinitially prevented. However, the manufacturing tolerances of theindividual components that must be taken into consideration cause anundesirably great radial clearance between brake holder, brake pad, andfloating caliper so that rattling noises can develop.

BRIEF SUMMARY OF THE INVENTION

In view of the above, an object of the invention is to provide afloating-caliper disc brake with a brake holder firmly attached to thevehicle and a displaceable floating caliper, which ensures afunctionally safe and comfortable displaceable mounting support of thefloating caliper on the brake holder for different caliper designs.

This object is achieved by a floating-caliper disc brake for motorvehicles comprises a brake holder firmly attached to the vehicle, onwhich a floating caliper is axially displaceably mounted. In particular,one or more pin guides may be arranged in this respect between the brakeholder and the floating caliper. A locking element is provided for theradial fixation of the floating caliper on the brake holder, beingdetachably secured to the floating caliper and being arranged with atleast one portion on the brake holder in an axially displaceable manner.The locking element is secured to the floating caliper so as to beadjustable in its radial position. This allows the accurate adjustmentof the radial clearance between brake holder and floating caliper inconformity with the respective case of application and irrespective ofany manufacturing tolerances developing. On the one hand, thisarrangement ensures ease of displacement of the floating caliper inrelation to the brake holder, while undesirable rattling and radiallifting of the floating caliper or of the brake pads out of the brakeholder is prevented, on the other hand. The locking element active in aradial direction is designed in particular as a generally stiffcomponent, e.g. as a sheet-metal component, in order to reduce elasticdeformations and, hence, permit only a minimum scope of radial motionfor the floating caliper. As a result, the development of undesirablerattling noises in defined operating conditions of the brake is reliablyprevented.

For the radially adjustable attachment of the locking element at thefloating caliper, a favorable aspect of the floating-caliper disc brakeprovides that the locking element is attached to an associated pin atthe floating caliper through a radially extending elongated hole or anyother appropriately sized opening, such as a U-shaped opening, a slot, alarge bore, etc. The elongated hole or the opening provides anaccommodation with a play for the associated pin so that a radialsetting range is achieved when attaching the locking element. Thisallows purposefully adjusting the radial clearance between brake holder,brake pad, and floating caliper by means of the subsequent mounting ofthe locking element on the floating caliper. Radial displacement of thelocking element permits adjusting the desired radial clearance andsubsequently securing the locking element to the floating caliper. Theactual attachment of the locking element to the floating caliper iscarried out by means of a pin, which may preferably be configured as ascrew or any other appropriate fastening bolt and is attached in anassociated bore in the floating caliper. The locking element is clampedin between the floating caliper and the pin and fixed by means of thisclamping effect in its radial position at the floating caliper.

According to an alternative variant of the floating-caliper disc brake,the locking element is detachably fastened to a carrier connected firmlyto the floating caliper. This reduces the machining effort at thefloating caliper because a fastening bore at the floating caliper forthe locking element is omitted. The carrier especially has a disc-shapeddesign and is firmly connected to the floating caliper inside anassociated opening therein, for example, by means of a press fit. Thelocking element can then be fastened to the carrier in a detachablemanner by way of a fastening bolt, as described hereinabove.

A favorable aspect of the floating-caliper disc brake is achieved inthat the portion of the locking element that is axially displaceablyarranged on the brake holder has a radially elastic design. This way, itis not only possible to purposefully adjust the radial clearance betweenthe floating caliper and the brake holder. Rather, a defined adjustmentof elastic preload in a radial direction between floating caliper andbrake holder is also rendered possible.

Another suitable design of the floating-caliper disc brake is achievedin that an elastic spring arm is provided at the locking element, whichbears against the brake holder with a preload in circumferentialdirection and in an axially displaceable manner. This arrangement willclamp the floating caliper elastically in a circumferential direction inrelation to the brake holder that is fixed to the vehicle. Thiscondition proves favorable above all in defined installation positionsof the floating-caliper disc brake on the vehicle wheel in terms ofpreventing rattling noises. The elastic spring arm is either formedintegrally with the locking element or connected thereto in anappropriate fashion. The direct coupling of the elastic spring arm tothe locking element favorably reduces the expenditure in components forthe floating-caliper disc brake.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 shows two views of a floating-caliper disc brake with a firstvariant of a locking element active between the floating caliper and thebrake holder.

FIG. 2 shows two views of the locking element of FIG. 1.

FIG. 3 is a side view of a floating-caliper disc brake including asecond variant of the locking element.

FIG. 4 is a side view of a floating-caliper disc brake including a thirdvariant of the locking element

FIG. 5 is a side view of a floating-caliper disc brake including afourth variant of the locking element.

FIG. 6 is a three-dimensional view of another floating-caliper discbrake design including a fifth variant of the locking element.

FIG. 7 is a cross-section taken through a portion of thefloating-caliper disc brake according to FIG. 6.

FIG. 8 shows two views of another design of the floating-caliper discbrake including a sixth variant of the locking element.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

The floating-caliper disc brake 1 for a motor vehicle shown in FIGS. 1to 5 comprises a brake holder 2 arranged firmly on the vehicle and beingeither integrated directly into a component on the vehicle, e.g. asteering knuckle, or mounted on a component of this type. Only thosestructural shapes of the brake holder 2 can be taken from the Figures,which can be mounted on the vehicle. With two axially extending holderarms 3, 4 the brake holder 2 straddles the edge of an associated brakedisc, which is not shown for the sake of clarity in all the Figures. Inthe holder arms 3, 4, brake pads 6, 7 arranged on either side of thebrake disc with respect to the brake disc axis are axially displaceablyguided and supported in a circumferential direction, with said brakepads 6, 7 respectively abutting radially in the holder arms 3, 4. Abrake caliper 5 that is axially displaceably mounted on the brake holder2 straddles the brake pads 6, 7 along with the brake disc. To this end,preferably two pin guides 8 are provided which act between the floatingcaliper 5 and the brake holder 2 and permit the displaceable mountingsupport of the floating caliper 5. The floating caliper 5 comprises twocaliper legs 9, 10 that extend on either side of the brake disc and areinterconnected by a bridge portion 11 straddling the brake disc. Twoactuating devices 12 are integrated for brake application into thecaliper leg 10 that is axially inward with respect to the vehicle inorder to apply a corresponding brake application force to the axiallyinward brake pad 6. When the brake is applied, an axial displacement ofthe floating caliper 5 in response to the reaction force will also causethe axially outward brake pad 7 to be pressed against the brake disc. Itis, of course, also feasible to accommodate only one single actuatingdevice or more than two actuating devices 12, respectively, in thefloating caliper 5 in order to generate the brake application force.

In order to prevent undesirable rattling noises from developing betweenthe brake holder 2, the brake pads 6, 7, and the floating caliper 5, alocking element 13 is provided that fixes the floating caliper 5radially in position relative to the brake holder, while the axialdisplaceability of the floating caliper 5 remains unaffected. To thisend, the locking element 13 is detachably fastened to the floatingcaliper 5, on the one hand, and bears axially displaceably against thebrake holder 2, on the other hand. As a special aspect of the detachableattachment, the locking element 13 is arranged so as to be adjustable inits position at the floating caliper 5, which is radial with respect tothe brake disc axis. This means that the radial clearance of thefloating caliper 5 in relation to the brake holder 2 can be defined byway of the radial positioning of the locking element 13 at the floatingcaliper. The result is ease of motion of the displaceable floatingcaliper mounting support on the brake holder 2 irrespective of possiblemanufacturing tolerances.

In detail, the locking element 13 is designed in particular as an Lstrap in a first design according to FIGS. 1 to 2, the base portion 14of said L strap being detachably fastened at the axially outwardsfloating-caliper leg 9 and abutting with lateral arms 15 displaceably atthe holder arms 3, 4. An L strap of this type is preferably made of asheet-metal blank, but it can also consist of other suitable materials.Further, the locking element 13 in FIGS. 1 to 2 is configured as aone-part L strap. Of course it is similarly also possible to design amulti-part variant of the locking element 13 where e.g. the arms 15 areconnected as initially separate components to the base portion 14. Avariant of this type renders it possible to use different materials forthe base portion 14 and the arms 15.

In the ready assembled condition, the arms 15 of the locking element 13secured to the floating caliper 5 bear against the bottom side of theholder arms 3, 4 in an axially displaceable manner. Arms 15 have agenerally rigid design and thereby prevent a radially pointing movementof the floating caliper 5 in relation to the brake holder 2. For greaterease of displacement, each arm 15 includes a radial elevation 16,whereby the contact surface between arm 15 and holder arm 3, 4 isreduced. The locking element 13 is principally adjustable in its radialposition and detachably secured to the floating caliper 5. At least oneradially extending elongated hole 17 is designed in the base portion 14.The locking element 13 of FIGS. 1 to 2 even includes two elongated holes17 through which fastening screws 18 extend, which in turn are screwedinto the axially outwards floating-caliper leg 9. Consequently, lockingelement 13 is arranged at the floating caliper 5 so as to be radiallyadjustable in its position within the dimensions of the elongated hole.To begin with, the floating caliper 5 is axially displaceably mounted onthe brake holder 2 prior to the initiation of a floating-caliper discbrake 1 of this type. Subsequently, the locking element 13 is attachedin a predefined radial position at the floating-caliper leg 9 bytightening the fastening screws 18. For detachably fastening the lockingelement 13 to the floating caliper 5, it is also feasible to use otherfastening bolts or similarly acting fastening means in addition to thefastening screw 18 shown. Besides, the locking element can also besuspended on one side at the floating-caliper leg 9, while it is screwedto the floating caliper at the other side in a radially adjustablefashion. In such a variant, preferably one hook is designed at thelocking element on one side thereof, which hook can be suspended into anassociated opening in the outward floating-caliper leg. An elongatedhole is designed on the opposite side of the locking element in order tomake the radial positioning adjustable. The elongated holes 17principally allow the defined adjustment of the radial clearance betweenfloating caliper 5 and brake holder 2. If desired, this radial clearanceadjustment may also relate to one or to both of the brake pads 6, 7 whenthe floating caliper 5 is radially supported on the brake holder 2 bymeans of at least one brake pad 6, 7. Thus, the radial clearance betweenthe brake holder 2, the brake pads 6, 7, and the floating caliper 5 canbe determined purposefully by means of the locking element 13. Thisallows compensating the manufacturing tolerances of all individualcomponents of the floating-caliper disc brake 1 under review during theradial positioning of the locking element 13. Consequently, it ispossible to arrange the floating caliper 5 either without a radialclearance or with a defined radial clearance relative to the brakeholder 2 irrespective of manufacturing tolerances of the individualcomponents. This prevents the development of undesirable rattling noisesand further improves in general the displaceable mounting support of thefloating caliper 5 on the brake holder 2.

FIG. 3 shows a second embodiment of the locking element 23 beingfastened at the floating-caliper leg so as to be adjustable in itsradial position. In contrast to the first variant, the locking element23 of FIG. 3 includes a first, generally rigid lateral arm 15 and asecond arm 25 that is elastical at least in a radial direction. The twoarms 15, 25, as is known, bear axially displaceably against the bottomside of the holder arms 3, 4. The elastic second arm 25 is generallyformed in that an indentation 26 is provided in the base portion 24.This will effect elastic deformability of the second arm 25 so that thelocking element 23 can produce a spring bias in a radial direction bymeans of this arm 25. This allows clamping the floating caliper 5 andthe brake pads 6, 7 radially in relation to the brake holder 2 that isfixed to the vehicle. In particular, the radially clearance-freearrangement of brake holder 2, brake pads 6, 7, and floating caliper 5can be ensured. A first elongated hole 17 and a second through hole 27are provided in the base portion 24 for the radially adjustableattachment of the locking element 23 at the floating-caliper leg 9. Inthe ready assembled condition, associated fastening screws or bolts thatare detachably secured in the floating caliper 5, project through theseholes 17, 27. The through hole can be designed either as a circular holeor as an elongated hole. However, the radial clearance or the freedomfrom clearance is adjusted on the opposite side of the locking element23 at the first elongated hole 17 by a corresponding attachment of theassociated fastening bore or screw. To this end, the locking element 23,by means of using the resilient effect of the radially elastic arm 25,is swiveled about the through hole 27 and secured to the floatingcaliper 5 by way of the elongated hole 17 when the desired radialclearance is reached.

FIGS. 4 and 5 depict further developments of the locking element 33, 34.As described hereinabove, the locking element 33, 34 is preferablyconfigured as an L strap which can be attached to the floating caliper 5so as to be adjustable in its radial position and bears with lateralarms 15 displaceably against the holder arms 3, 4 of the brake holder 2.The above-mentioned elongated holes 17 are provided in the base portion14 for the detachable and radially adjustable attachment of the lockingelement 33 at the floating caliper 5. The general function of thelocking element 33, 34, in particular for the defined determination ofthe radial clearance between brake holder 2, the brake pads 6, 7, andthe floating caliper 5 is maintained, as has already been described byway of FIGS. 1 to 3.

According to FIG. 4, the locking element 33 includes an integrallyformed spring arm 20, which is configured as an extension of arm 15 inthe embodiment illustrated. However, the spring arm 20 can also beconnected to the locking element 33 at a different location. In detail,the spring arm 20 abuts under bias in a circumferential direction on anassociated contact surface 21 at the holder arm 4 in an axiallydisplaceable fashion. To this end an elevation 22 is shaped at springarm 20 to reduce the friction effect in relation to the contact surface21. The bias of the spring arm 20 is used to clamp the floating caliper5 preferably together with the brake pads 6, 7 in a circumferentialdirection relative to the brake holder 2. This prevents undesirablerattling noises between the individual brake components, as they mayoccur especially in unfavorable installation situations of thefloating-caliper disc brake 1 at the vehicle wheel. The spring arm 20according to FIG. 4 cooperates with the holder arm 4 that is on theentry side with respect to the main direction of rotation 19 of thebrake disc, that means during forward travel. This allows clamping thefloating caliper 5 and the brake pads 6, 7 connected therewith inrelation to the entry-side holder arm 4 in opposition to the maindirection of rotation 19. Depending on the installation situation of thefloating-caliper disc brake 1, however, it may also be advisable toarrange the spring arm 20 at the opposite end of the locking element 33and make it interact with the exit-side holder arm 3.

FIG. 5 shows another embodiment of the locking element 34 with springarm 30 modified compared to FIG. 4. The spring arm 30 is designed hereinas a separate component, which is connected with its fastening portion29 to the locking element 34 by way of an appropriate fastening means28, for example a rivet. This allows the spring arm 30 a free anddefined layout with respect to its design and the selection of itsmaterial. Further, the spring arm 30 comprises a curved spring portion31, which abuts on a correspondingly configured contact surface 32 atthe holder arm 3 under bias in a circumferential direction so as to beaxially displaceable. The curved configuration of the spring arm 31allows realizing appropriate spring characteristic curves that permitpurposefully determining the desired spring biasing force. In contrastto the variant according to FIG. 4, the spring arm 30 according to FIG.5 cooperates with the holder arm 3 that is on the exit side with respectto the main direction of rotation. The floating caliper 5 along with thebrake pads 6, 7 is thereby clamped in a circumferential direction withrespect to the exit-side holder arm 3 by way of the locking element 34secured to the floating caliper 5. More specifically, the resilientpreload of the spring arm 30 by means of associated abutment surfaces35, 36 urges the floating caliper 5 through the axially outward brakepad 7 against a supporting surface 37 on the exit-side holder arm 3.This provision reliably prevents rattling of the individual brakecomponents irrespective of the specific mounting situation or definedoperating conditions.

The spring arm 20, 30 shown in FIGS. 4 to 5 and used to clamp thefloating caliper 5 and the brake pads 6, 7 in relation to the brakeholder 2 in a circumferential direction may principally be transferredalso to other embodiments of the floating caliper 5 or the brake holder2, respectively. It is important that the respective spring arm 20, 30can generate a resilient preload in a circumferential direction betweenthese two components irrespective of the specific design of the floatingcaliper or the brake holder, respectively.

FIGS. 6 to 7 show an alternative variant of the locking element 43 for amodified construction of the floating-caliper disc brake 41. In thisvariant the floating caliper 5 is arranged on the brake holder 42 fixedto the vehicle in a similar way slidable by means of two pin guides 12.The floating caliper 5 straddles in a known fashion a brake disc notshown and brake pads 38, 39 arranged on either side of the brake discand slidably guided in the holder arms 3, 4 and supported in acircumferential direction. However, the axially extending holder arms 3,4 are interconnected by means of a web 40. This causes a considerablereinforcement of the brake holder 42, as is required especially in veryefficient floating-caliper disc brakes. Web 40 is used to reduce thedeformation of the brake holder 2 or the holder arms 3, 4, respectively,due to an applied brake torque. At its base portion 44, the lockingelement 43 that is conformed to the construction of the floating-caliperdisc brake 41 is releasably secured to the axially outwardsfloating-caliper leg 9 by means of one single fastening screw 18 or anycomparable fastening means. The radially adjustable positioning of thelocking element 43 at the floating caliper 5 is effected as known by wayof an elongated hole 17 in the base portion 44. For the rattle-freedisplaceable arrangement of the floating caliper 5 at the brake holder42, arms 45 are designed on either side of the locking element 43 andslidably abut on the bottom side of web 40. An elevation 46 is shaped ateach arm 45 in order to minimize the contact surface towards web 40 andany friction effects resulting therefrom. Thus, the arms 45 allow aradially clearance-free arrangement of the floating caliper 5 relativeto the brake holder 42 according to the invention. Alternatively, it isalso possible to adjust a defined radial clearance between brake holder42 and floating caliper 5 irrespective of manufacturing tolerances ofthe individual components. The purposeful adjustment of the radialclearance by means of the locking element can also relate to the brakepads 38, 39 or at least one of the brake pads 39. This is illustrated inFIG. 7 wherein the floating caliper 5 due to abutment on a step 47 ofthe outward brake pad 39 is radially supported on said. Thus, the effectof the adjustable locking element 43 renders it possible to define theradial clearance between the brake holder 42 fixed to the vehicle, atleast the outward brake pad 39, and the floating caliper 5.

Other designs of the locking element 43 active between brake holder 42and floating caliper 5 are principally also feasible for such aconstruction of the brake holder 42 with web 40. It is then notabsolutely necessary to equip the locking element 43 with two lateralarms 45 that bear against web 40. It is likewise possible for only onetab (not shown) to extend from the base portion 44 and embrace the web40 similarly. This way, a purposeful adjustment of the radial clearancebetween floating caliper 5 and brake holder 42 is achieved just as well.

FIG. 8 displays in two views another embodiment of a locking element 53for the adjustment of a radial clearance between floating caliper 50 andbrake holder 2. The design of the floating-caliper disc brake 51 shownin FIG. 8 comprises a floating caliper 50, which is displaceablyarranged on the brake holder 2 fixed to the vehicle, however, includesonly one single actuating device 12 for applying a brake applicationforce. A carrier 48 is connected to the floating caliper 5 for theradially adjustable and releasable attachment of the locking element 53at the floating caliper 50. The carrier 48 is configured as a simpledisc, for example, which is secured especially in a form fit in anassociated opening 49 in the outward floating-caliper leg 59.Preferably, carrier 48 is press fitted into the concentric opening 49,said opening 49 encompassing the carrier 48 at an angle of more than180°. The carrier 48 is this way reliably fixed in a radial direction inthe floating caliper 50.

The locking element 53 can be fastened to the carrier 48 so as to beadjustable at carrier 48 by way of an elongated hole 17 in the baseportion 54. It is preferred to use a fastening screw or any otherfastening element (not shown) in order to releasably connect the lockingelement 53 to the carrier 48. Machining of the floating caliper 50 issimplified by interposing the carrier 48 in order to connect the lockingelement 53 releasably to the floating caliper 50.

The floating caliper 50 is locked radially with respect to the brakeholder 2 by way of laterally extending arms 55 of the locking element 53which, similar to the embodiments explained hereinabove, abut throughone elevation 56 each slidably on the holder arms 3, 4. In total, thelocking element 53 is thus equally active between the floating caliper50 and the brake holder 2 fixed to the vehicle. Only the radiallyadjustable attachment of the locking element 53 at the floating caliper50 takes place through an interposed carrier 48. Accordingly, anyoptional adjustment of the radial clearance between the brake holder 2,the brake pads 6, 7, and the floating caliper 50 is rendered possiblealso for this variant.

Of course, the fastening variant for the locking element 53 illustratedin FIG. 8 can also be transferred to constructions of thefloating-caliper disc brake wherein several actuating devices areintegrated in the floating caliper. Such floating-caliper designs withe.g. two actuating devices in each case are shown in FIGS. 1 to 7. Forthe radially adjustable attachment of the corresponding locking element,it is then necessary to use several, for example two, carriers in theoutward floating-caliper leg. The associated locking element could thenbe radially adjustably and detachably secured to each carrier.

1-8. (canceled)
 9. A floating-caliper disc brake of a motor vehicleincluding a brake holder firmly attached to the vehicle, on which afloating caliper is axially displaceably mounted, and including alocking element for the radial fixation of the floating caliper on thebrake holder that is detachably secured to the floating caliper andaxially displaceably arranged with a portion on the brake holder,wherein the locking element is secured to the floating caliper so as tobe adjustable in its radial position.
 10. The floating-caliper discbrake as claimed in claim 9, wherein the floating caliper is supportedat least radially on an associated brake pad, which in turn is axiallydisplaceably guided in and radially abutting on the brake holder. 11.The floating-caliper disc brake as claimed in claim 9, wherein thelocking element is attached to the floating caliper by means of at leastone radially extending elongated hole or any other appropriately sizedopening in which an associated pin is arranged with a clearance.
 12. Thefloating-caliper disc brake as claimed in claim 9, wherein the lockingelement is detachably fastened to a carrier connected firmly to thefloating caliper.
 13. The floating-caliper disc brake as claimed inclaim 11, wherein the pin is detachably secured to the floating caliper.14. The floating-caliper disc brake as claimed in claim 11, wherein thelocking element is detachably fastened to a carrier connected firmly tothe floating caliper; and wherein the pin is detachably secured to thecarrier.
 15. The floating-caliper disc brake as claimed in claim 9,wherein the portion of the locking element that is axially displaceablyarranged on the brake holder has a radially elastic design.
 16. Thefloating-caliper disc brake as claimed in claim 15, wherein at least oneelastic spring arm is provided at the locking element and bears againstthe brake holder with a preload in circumferential direction and in anaxially displaceable manner.